The function P(x) = –0.015x 2 + 1.2x – 11.5 gives the profit, in thousands of dollars, when
a company sells a new product at x dollars per unit. Which of the following statements best
interprets the average rate of change of this function from x = 50 to x = 55?
A. The profit increases by $375 for every $1 increase in the selling price.
B. The profit decreases by $375 for every $1 increase in the selling price.
C. The profit increases by $1875 for every $1 increase in the selling price.
D. The profit decreases by $1875 for every $1 increase in the selling price.

i dony know

step-by-step explanation:

-232

step-by-step explanation:

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.